Faxon Firearms EXOS-524, Compensator, 9MM, Fits Smith & Wesson M&P Shield/Shield Plus, Anodized Finish, Black FF-P-A-COMP-SS-MP-01 Constructed of 6061 aluminum with a black anodized finish" Faxon Pistol Compensators feature a uniquely angled front port single chamber design" enabling the compensator to improve consistency while reducing muzzle climb and recoil. The angled ports allow gas to deflect upwards as opposed to only deflecting sideways" reducing up and down muzzle movement and improving reliability. Barrel protrusion is designed to fit flush with the slide and has been optimized for Faxon branded barrels. For all other barrels" the barrel should protrude .600" or less for a flush fit. Each compensator comes complete with thread locker" two 6-32 set screws" and a 1/16 Allen wrench.